my awesomest math puzzle

(A+B)(B-B)
ARCHIMEDES
BRAMHAGUPTA
DAVIDHILBERT
HIPPOCRATES
INTEGERS
IRRATIONAL
ISAACNEWTON
RATIONAL

it contains all math stuff

Try to find all 9 words on this board.

N B H Z H T F D E O S T Z H D
B D R I R R A T I O N A L K N
Q M A A P A K J C U G P F T Q
J S R V M P T W H I Y B Z N S
X H C C I H O I N T E G E R S
B I H ( S D A C O M O V S V M
A W I Q A A H G R N F T E T G
C R M Y A + G I U A A B I C T
B K E F C W B F L P T L X C M
Z J D J N I V ) Q B T E V J C
G P E M E Y T Z ( L E A S L R
L Y S D W J W V V B A R V C V
T B A Z T C V Q Z O - I T X B
A V H C O J V C P W F B F W Z
H C A G N E S S P Z X G ) K V
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Answer Key for my awesomest math puzzle

X
Y
123456789101112131415
1# B H # # # # # # # # # # # #
2# D R I R R A T I O N A L # #
3# # A A P A # # # # # # # # #
4# # R V M P T # # # # # # # #
5# # C # I H O I N T E G E R S
6# # H ( S D A C O # # # # # #
7# # I # A # H G R N # # # # #
8# # M # A + # I U A A # # # #
9# # E # C # B # L P T L # # #
10# # D # N # # ) # B T E # # #
11# # E # E # # # ( # E A S # #
12# # S # W # # # # B # R # # #
13# # # # T # # # # # - # T # #
14# # # # O # # # # # # B # # #
15# # # # N # # # # # # # ) # #
Word X Y Direction
(A+B)(B-B)  57se
ARCHIMEDES  33s
BRAMHAGUPTA  21se
DAVIDHILBERT  88se
HIPPOCRATES  31se
INTEGERS  85e
IRRATIONAL  42e
ISAACNEWTON  55s
RATIONAL  52se